Originally posted by ashills:
Where are the two up stream O2 sensors located?


Thanks Andy



The front one is on the front exhaust manifold facing the radiator. Easy to find and replace.

The rear one is under the coil pack on the rear exhaust manifold. PITA.

Bosch # 13115 for around $60 each is the correct upstream sensor. They will ask you if it is the sensor before or after the converter. Tell them "Before".

Steve

98 Contour SE Sport 2.5 Duratec ATX The wifey's car 89 Taurus SHO - 246K miles 94 SHO ATX - 190K 1997 F-150 5.4L ATX - The Workhorse 150K. ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!